the reset.py stuck in the hw.mark_and_flush()

[kuliyang]

After using sniffle_cc2652r1.hex firmware and burning it with UNIFLASH, execute the reset.py script to reset, but the program keeps getting stuck in the hw. mark_and_flush() function. why!
Before running the program, I have checked the Python environment and dependencies with reference to README.md and confirmed that there are no installation issues. The development environment is Ubuntu 18.
Do I need to cross compile this sniffer project? Is it only necessary to burn cc2652r1.Hex and then execute Reset.Py to run it?

[sultanqasim]

Generally this means you either built the firmware wrong or flashed the wrong version. Did you try the prebuilt firmware binaries?